// ## 基础类型 boolean, number, string
let isDone: boolean = false

let decLiteral: number = 6
let hexLiteral: number = 0xf00d
let binaryLiteral: number = 0b1010
let octalLiteral: number = 0o744
// let bigLiteral: bigint = 100n

let defaults = {food: 'spicy', price: '$$', ambiance: 'noisy'}
let search = {...defaults, food: 'rich'}


